Unlock Tallgeese III (Street Mode)
Finish Street Mode using Wing and Deathscythe in Normal mode.

Get Char's Zaku II
To get General Aznable's personal Zaku II, you must start the game. After the announcer says "Gundam Battle Assault," press LEFT, UP, RIGHT, DOWN, SQUARE, TRIANGLE, CIRCLE. You will hear a noise confirming entry. Char's Zaku and Char are now available in Versus Mode. Note: You cannot save the Zaku; you must enter the code every time.

Play as MA-08 Bygzam:
Complete story mode under the easy difficulty level.

Play as AMX-002 Neue-Ziel
Complete story mode under the normal difficulty level.

Play as Psycho Gundam Mk III:
Complete story mode under the hard difficulty level.

Play as 0Z-15 AGX Hydra Gundam:
Complete story mode under the hard difficulty level without continuing.

Play as RX-78-2 Gundam:
Complete story mode under any difficulty level then complete story mode again as any Gundam except Z-Gundam and Ac Guy.

Play as Gundam:
Complete story mode with the GP02A after defeating Gundam.

Play as New Gundam:
Complete story mode with the Zaku II after defeating New Gundam.

Play as Ball:
Complete the game with all twelve mobile suits under any difficulty setting.

Play as V-Gundam:
Complete the game as Aguie under the hard difficulty setting.

Special attacks:
Press Down, Forward, Down, Forward, Square with any character to do their special attack.